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SQL Handwritten Notes Repository: A collection of PDF notes covering SQL concepts with concise definitions and examples. Explore fundamental commands, date/time functions, joins, and more. Contributions welcome!
Learning SQL eBook (PDF) Download this eBook for free. Chapters. Chapter 1: Getting started with SQL. Chapter 2: ALTER TABLE. Chapter 3: AND & OR Operators. Chapter 4: Cascading Delete. Chapter 5: CASE. Chapter 6: Clean Code in SQL. Chapter 7: Comments. Chapter 8: Common Table Expressions. Chapter 9: CREATE Database. Chapter 10: CREATE FUNCTION.
Download. 01 - SQL - Oracle SQL Training Manual.pdf. 01 - SQL - Oracle SQL Training Manual.pdf.
1 cze 2021 · Standard SQL Functions Cheat Sheet. TEXT FUNCTIONS. CONCATENATION. Use the || operator to concatenate two strings: SELECT 'Hi ' || 'there!'; -- result: Hi there! Remember that you can concatenate only character strings using. ||. Use this trick for numbers: SELECT '' || 4 || 2;
Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now » Examples in Each Chapter
1 cze 2021 · Some databases implement non-standard solutions for concatenating strings like CONCAT() or CONCAT_WS(). Check the documentation for your specific database. Use the _ character to replace any single character. Use the % character to replace any number of characters (including 0 characters).
Let's Get Started Week 1 introduces SQL from a historical and theoretical perspective. The first statement you learn about is the SELECT statement, which enables you to retrieve data from the database based on various user-specified options. Also during Week 1 you study SQL functions, query joins, and SQL subqueries (a query within a query).
